<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>动态气泡背景</title>
    <style>
        *{
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body{
            min-width: 100vh;
            background: #0c192c;
        }
        .container{
            position: relative;
            width: 100%;
            height: 100vh;
            overflow: hidden;
        }
        .bubbles{
            display: flex;
        }
        .bubbles span{
            width: 30px;
            height: 30px;
            background-color: #4fc3dc;
            margin: 0 4px;
            border-radius: 50%;
            box-shadow: 0 0 0 10px #4fc3dc44,0 0 50px #4fc3dc,
            0 0 100px #4fc3dc;
            animation: animate calc(120s / var(--i)) linear infinite;
        }
        .bubbles span:nth-child(even){
            background-color: #ff2d75;
            box-shadow: 0 0 0 10px #ff2d7544,0 0 50px #ff2d75,
            0 0 100px #ff2d75;
        }
        @keyframes animate {
            0%{
                transform: translateY(100vh) scale(0);
            }
            100%{
                transform: translateY(-10vh) scale(1);
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="bubbles">
            <span style="--i:18;"></span>
            <span style="--i:10;"></span>
            <span style="--i:12;"></span>
            <span style="--i:21;"></span>
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            <span style="--i:11;"></span>
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            <span style="--i:24;"></span>
        </div>
    </div>
</body>
</html>